... 12mSteel materialQ195 → Grade B, SS330,SPHC, S185Q215 → Grade C,CS Type B,SS330, SPHCQ235 → Grade D,SS400,S235JR,S235JO,S235J2StandardBS EN10296 ... Plain 2) Beveled3) Thread with Coupling or capEnd protector1) Plastic pipe cap2) Iron protectorSurface Treatment1) Bared2) Black Painted (varnish coating)3 ... Western UnionOthersFitting as screws and flange also can be supplied. high quality square steel pipe